If you don't want to have an extension to take a full size screen shot you can just go to Chrome Dev Tools press CTRL + SHIFT + P and search for "Capture full size screenshot" and Chrome will take a full size picture.
If you don't want to have an extension to take a full size screen shot you can just go to Chrome Dev Tools press CTRL + SHIFT + P and search for "Capture full size screenshot" and Chrome will take a full size picture.